package cn.chenc.framework.web.interceptor;


import cn.chenc.framework.core.annotation.RepeatSubmit;
import cn.chenc.framework.core.model.request.RequestHolder;
import cn.chenc.framework.core.model.response.ResponseVO;
import cn.chenc.framework.web.model.response.ResultUtil;
import cn.chenc.framework.core.util.JsonUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import java.lang.reflect.Method;

/**
 * 防止重复提交拦截器
 *
 * @author secret
 */
public abstract class RepeatSubmitInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (handler instanceof HandlerMethod) {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            //只拦截重复提交注解
            RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
            if (annotation != null) {
                if (this.isRepeatSubmit(request)) {
                    ResponseVO responseVO = ResultUtil.error("不允许重复提交，请稍后再试");
                    RequestHolder.renderString(response, JsonUtils.objectToJson(responseVO));
                    return false;
                }
            }
            return true;
        } else {
            return true;
        }
    }

    /**
     * 验证是否重复提交由子类实现具体的防重复提交的规则
     *
     * @param request
     * @return
     * @throws Exception
     */
    public abstract boolean isRepeatSubmit(HttpServletRequest request);
}
